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Overview

Back in June, we took a look at TRENDnet's top-of-line TEW-812DRU AC1750 class router. While it had a few highlights, overall it had unimpressive performance and a few other problems. Today we're going to look at a slightly less expensive and lower performance draft 11ac alternative, the AC 1200 class TEW-811DRU.

The TEW-811DRU looks a lot like the TEW-812DRU, with the same upright format and many of the same front LEDs.

TRENDnet TEW-811DRU indicators and buttons

The front of the TEW-811DRU has lots of LEDs for those who like blinking lights. There are LEDs for USB, 2.4Ghz, 5GHz, each LAN port, the WAN port and Power. The rear panel diagram below shows a sole USB 2.0 port and identifies the single Gigabit WAN and four switched Gigabit LAN Ethernet ports. Note that US consumers do not get a power button.

Inside

Unlike the NETGEAR R6100, the TEW-811DRU has two dual-band antennas; which are shared between both radios. The large heatsink covers the Broadcom BCM47081A0KFEBG CPU. This is a lower-performance member of Broadcom's second-generation router SoC.

TRENDnet TEW-811DRU inside

The heatsinks came off with a couple of screws each, rewarding us with our view of the TEW-811DRU's naked chipsets.

TRENDnet TEW-811DRU board naked

The largest chip is a Broadcom BCM47081A0 SoC that handles the main CPU, Ethernet and USB functions.

The slightly smaller device to the left of the photo is the 5 GHz radio in the form of a Broadcom BCM4352 with two Skyworks SE5003L 5 GHz power amplifiers.

At the top left of the photo is the BCM43217 that supplies the 2.4 GHz radio. This radio does not have outboard power amps. 64 MB of RAM and 8 MB flash finish up the design. Table 1 includes the NETGEAR R6100's key components for comparison.

Table 1: TRENDnet TEW-811DRU key components

Features

Logging into router admin lands you at the Status page shown below. Administration is via HTTP only, even when remote admin access is enabled.

TRENDnet TEW-811DRU Status page

I ran through the admin interface for both the TEW-811DRU and TEW-812DRU. Although the look is somewhat different, the options appear to still be nearly identical and everything that was mentioned in the TEW-812DRU review still applies.

Table 2: Wireless settings summary

Browsing through the wireless setup menus I also found that each radio could be disabled, but not on a schedule. Advanced wireless features included an XPress Technology enable (default enabled), but no transmit power adjust. Guest networks are available on each radio that have their own security modes and options for isolating wireless clients from each other and limiting client access to internet access only.

In addition to the manual wireless security settings shown above, the router supports WPS PIN and pushbutton setup modes. You also can define schedules for turning each radio on and off for added security. Note there is no WEP option listed in the security selectors, even when disabling the 802.11n mode.

Storage Performance

The TEW-811DRU supports file sharing via SMB and FTP, and it also supports printer sharing. There are no media servers.

We ran Windows filecopy tests using the standard NAS testbed to the TEW-811DRU with our USB standard drive (Startech USB 3.0 eSATA to SATA Hard Drive Docking Station (SATDOCKU3SEF) containing a WD Velociraptor WD3000HLFS 300 GB drive) formatted in FAT32 and NTFS. Table 3 shows the results along with some from other draft 11ac routers with USB 2.0 ports.

TRENDnet
TEW-811DRU

NETGEAR R6100

TRENDnet
TEW-812DRU

FAT32 Write (MBytes/s)

8.9

7.8

5.0

FAT32 Read (MBytes/s)

10.8

10.5

6.4

NTFS Write (MBytes/s)

3.6

9.9

2.2

NTFS Read (MBytes/s)

9.4

10.5

5.5

Table 3: File copy throughput

You can see here that if you are reading / writing FAT32, the TEW-811DRU does comparatively well. But for all other tests, the NETGEAR R6100 is the best of this bunch. Note that the 811 is slightly better than the more expensive 812 for all the benchmarks. This is most likely due to the more powerful second generation SoC in the 811.

Routing Performance

Routing throughput was measured running V1.0.2.0 firmware, using our standard router test process. Table 4 summarizes the results. As we have come to expect from Broadcom-based AC routers, throughput is well above 500 Mbps in each direction.

Test Description

TEW-811DRU

WAN - LAN

575.1 Mbps

LAN - WAN

669.2 Mbps

Total Simultaneous

728.4 Mbps

Maximum Simultaneous Connections

14,992

Firmware Version

V1.0.2.0

Table 4: Routing throughput

We are now separating the unidirectional and simultaneous IxChariot throughput plots for clarity. The composite unidirectional plot below shows a significant amount of variation in both directions, with some occasional dips down to 100 - 200 Mbps.

TRENDnet TEW-811DRU routing throughput unidirectional summary

The simultaneous up/downlink test shows some very large variances in throughput, with speeds dropping down into the 10/100 range in some cases and up and downlink seeming to battle for dominance. However, given the > 500 Mbps of routing throughput, this variation is unlikely to be a problem in actual use.

TRENDnet TEW-811DRU routing throughput bidirectional summary

Wireless Performance

The TEW-811DRU is not Wi-Fi Certified. It defaulted Auto channel and "Auto" mode (20 MHz, auto speed selection) on the 2.4 GHz radio and channel 153 and "Auto" (80 MHz, Auto speed selection) for the 5 GHz radio upon power-up. The router comes with different 2.4 and 5 GHz SSIDs set, so you'll be able to connect to your desired band without having to change router settings.

We didn't have any luck getting our Win 7 client to detect that the router was WPS enabled, so we mark WPS function as failing our tests, too. Checking the WPS page for both radios showed WPS was enabled with a status of "Processing WPS start...".

All tests were run using our new wireless test process and V1.0.2.0 version firmware loaded. The router was first reset to factory defaults and Channel 6 was set for 2.4 GHz and Channel 153 for 5 GHz. "Auto" (20 MHz B/W) mode was set for 2.4 GHz and "Auto" (80 MHz B/W) mode (to enable draft 802.11ac link rates) was set for 5 GHz. The test client was connected via WPA2/AES encryption that was manually set up.

The router was positioned 8" from the chamber antennas in all test positions. The 0° position had the right side (facing front) of the router toward the chamber antennas.

The retest Benchmark Summary below from the new Consolidated benchmark process shows the average of throughput measurements made in all test locations. The 2.4 GHz values in the summary correspond to 2.4 GHz values (20 MHz B/W) and the 5 GHz values correspond to the 80 MHz B/W values measured with the previous test methodology.

TRENDnet TEW-811DRU Benchmark Summary

Compared to the only other AC1200 router tested so far—NETGEAR's R6100 —the TEW-811DRU's 2.4 GHz average throughput is about half the NETGEAR's for both up and downlink. The main reason for the difference is that the TEW-811DRU's throughput falls off drastically as signal level drops. You'll see this clearly in the throughput vs. attenuation plots shortly.

5 GHz performance is the opposite, with the TEW-811DRU averaging about double the NETGEAR R6100's downlink throughput and 50% more on uplink.

For a look at full throughput vs. attenuation plots, I plotted the only other AC1200 router, NETGEAR's R6100 and added in NETGEAR's R6250 AC1600 router as a next-step-up alternative. Note that the R6250 has Gigabit Ethernet ports, while the R6100 is only 10/100.

The 2.4 GHz downlink profile shows the TRENDnet's much poorer range performance. Throughput falls off sooner than both NETGEARs with the router disconnecting at 48 dB attenuation. The R6100's 100 Mbps Ethernet ports are probably not holding back its maximum throughput, which at the 0 dB point used for throughput ranking falls midway between the other two products.

2.4 GHz Downlink Throughput vs. Attenuation

The 2.4 GHz uplink plot again shows quickly diminishing range performance, but higher maximum throughput. With the router disconnecting again at 48 dB of attentuation.

2.4 GHz Uplink Throughput vs. Attenuation

Fortunately, the negatives of the TEW-811DRU's 2.4 GHz performance are offset by what happens in 5 GHz. The TEW-811DRU's throughput is higher than the R6100's throughout the entire measured range.

5 GHz Downlink Throughput vs. Attenuation

The 5 GHz uplink plot shows a similar story, the AC1600 R6250 on top, TRENDnet AC1200 in the middle and R6100 on the bottom.

5 GHz Uplink Throughput vs. Attenuation

For a look at throughput characteristics, let's check out a few IxChariot plots. Here is the simultaneous up/downlink plot for the 2.4 GHz radio. We're accustomed to seeing a uplink or downlink bias in these simultaneous tests and the TEW-811DRU looks like it heavily favors downlink.

2.4 GHz up/downlink IxChariot plot - 0dB

The 5 GHz simultaneous up/downlink plot below is similar to the 2.4's it that it has the same preference for downlink over uplink, but there are some large variations in the 5 GHz downlink plot, while uplink stays steady, but very low.

5 GHz up/downlink IxChariot plot - 0dB

Closing Thoughts

When we look at the Router Ranker for AC1200 routers, we see the TEW-811DRU is ranked #1, followed by the only other AC1200 router reviewed so far, the NETGEAR R6100. Digging into the TRENDnet's Ranker Performance summary below shows that it gets top ranking for many benchmarks. Unfortunately, this ranking isn't very useful because both are flawed products.

TRENDnet TEW-811DRU Router Ranking Summary

The TEW-811DRU's weaknesses are its broken WPS, bad behavior for both 40 MHz coexistence and Fat channel intolerance scenarios and poor 2.4 GHz range. The NETGEAR R6100's main sin is its 10/100 Ethernet ports, which hold back both its wired routing and 5 GHz throughput. Of these two, the 5 GHz holdback is the worse, because that's what you're primarily buying an AC class router for!

So while following the Router Ranker blindly might cause you to put a TEW-811DRU into your shopping cart over the NETGEAR R6100, we can't really recommend either if you want a fully functioning AC1200 class router that can provide all the throughput it should be able to provide.